1. EPFL-SPC, 5232 Villigen PSI, Switzerland
Magnet and cable test facility at the Swiss Plasma Center (PSI, Villigen)
D. Uglietti, N. Bykovsky, B. Stepanov, K. Sedlak, R. Wesche, and P. Bruzzone
EPFL-SPC, 5232 Villigen PSI, Switzerland
Background
Facilities (SULTAN/EDIPO)
Upgrades
Summary

2. EFPL - Swiss Plasma Center – Superconductivity Group
Background
EFPL - Swiss Plasma Center – Superconductivity Group
MAIN ACTIVITIES - Applied superconductivity for Nuclear Fusion magnets
Testing of conductors for ITER (International Thermonuclear Experimental Reactor) -
Testing of high current, high field HTS conductors for fusion magnets - EuroFusion
R&D on LTS and HTS conductors for future reactors (DEMO) - EuroFusion
OTHERS ACTIVITIES
LTS and HTS tests under bilateral agreements, worldwide
R&D on HTS high field inserts - Swiss national projects
R&D on HTS currents leads
Located in Paul Scherrer Institute (PSI)
Villigen, Switzerland

3. Facilities in Villigen DC current for testing samples up to 100 kA
The SULTAN test facility has been used for 30 years in testing cable in conduit conductors for the fusion program.
It is the only facility for testing NbTi and Nb3Sn conductors for ITER.
EDIPO – T dipole magnet
92x142 mm2 test well (1% homogeneity over 85 cm)
SULTAN – 11 T split coil solenoid
94x144 mm2 test well (1% homogeneity over 300 mm)
580 mm Ø solenoid bore (1% in a 300 mm Ø sphere)
DC current for testing samples up to 100 kA
Supercritical Helium at 10 bar and 4.5 K10 K, up to 10 g/s
Superimposed steady state ac field: < 0.4 T, 0.01 to 6 Hz (100 Hz)
Superimposed pulsed field: < 4 T amplitude, ms period

4. SU.L.T.AN. (SUpraLeiter Test ANlage)
SC trafo
Vertical test well 94x144 mm2 (separated vacuum)
6 T I I
9 T
12 T B B V
joint
Magnet and sample cooled by forced flow of supercritical He (4.5 K- 20 K)
Possibility of coil testing in the main bore (Ø600 mm)

5. E.DIPO. (EuropeanDIPOle)
Iron yoke
SC dipole
test well
Race-rack tilted-ends dipole built with Nb3Sn cable in conduit.
18 kA HTS current leads (designed and built in house)
Vertical test well 92x142 mm2 (separated vacuum)
Magnet and sample cooled by forced flow of supercritical He (10 bar, 4.5 K – 50 K) B
DAQ: National instruments CompactDAQ
3x9205 (96 channels S.E. for voltage)
3x9208 (48 channels S.E. current, for cernox)

6. EDIPO (EuropeanDIPOle)
Vertical test well 92x142 mm2 (separated vacuum)
Field homogeneity: 3% over 1000 mm at 12.4 T.

7. EDIPO – cryostat (in preparation)
A variable temperature insert cryostat is in preparation.
The work is carried out in collaboration with CERN in view of testing HTS dipoles.
The cryostat could be filled with LHe at 4.2 K, 1 bar.
Alternatively, a flow of supercritical He at 10 bar, with temperature between 4.5 K and 50 K could be established.
The cryostat allows testing of samples in bath; a conduit for cooling is not required.
Background field up to 12.4 T.
20 kA current terminals
1200
Uniform field
1000
field center

8. JORDI - cryostat Large vacuum tank with two HTS current leads.
10 kA power supply
DAQ: 64 channels (single ended)
Supercritical He line (10 bar, 4.5 K)
LHe container for 4.2 K operation in bath
It was used for testing 10 kA HTS current leads and joint resistance of cable in conduits.
10 kA HTS current leads
Ø600
900

9. TEST STANDS ID CARD 1 location PSI ( CH, Villigen)
2 surface of the test stand aprox. 350 m2 on three levels
3 operating temperature and cooling techniques K LHe, 4.5 K – 50 K supercritical He
4 cooling phases K
5 cooling and pumping capacity up to 10 g/s supercritical He at 10 bar
6 shared cryogenics? Or other equipment? -
7 operating and mx. Current, max voltage kA, 5 mV (in supercritical He); 20 kA, 5 mV (in LHe); 10 kA, 2 V (JORDI)
8 HVWL unknown
9 nr of cryostats 2: EDIPO/SULTAN, JORDI
10 capacity of cryostats EDIPO/SULTAN test well: 92 mm x 192 mm, 4000 mm long. JORDI: Ø600 h900
11 handling tools 1 x 20 t overhead crane
12 Interlock safety yes
13 DAQ cards and used soft NI CompactDAQ modules 3x9205 (96 ch SE) and 3x9208 (48 ch SE), Labview
14 Quality control tools -
15 magnetic meaurement capability Hall sensors